TY - JOUR
T1 - Genetic relationship of litter traits between farrowing and weaning in Landrace and Large White pigs
AU - Ogawa, Shinichiro
AU - Konta, Ayane
AU - Kimata, Makoto
AU - Ishii, Kazuo
AU - Uemoto, Yoshinobu
AU - Satoh, Masahiro
N1 - Funding Information:
We thank the anonymous reviewers for their helpful suggestions. We also thank Masamitsu Tomiyama, at CIMCO corporation, for his useful comments in revising the manuscript. This work was supported by a grant from the Ministry of Agriculture, Forestry and Fisheries of Japan (Development of Breeding Technology for Animal Life Production).
Funding Information:
We thank the anonymous reviewers for their helpful suggestions. We also thank Masamitsu Tomiyama, at CIMCO corporation, for his useful comments in revising the manuscript. This work was supported by a grant from the Ministry of Agriculture, Forestry and Fisheries of Japan (Development of Breeding Technology for Animal Life Production).
Publisher Copyright:
© 2019 Japanese Society of Animal Science
PY - 2019/12/1
Y1 - 2019/12/1
N2 - We estimated genetic parameters in Landrace and Large White pig populations for litter traits at farrowing (total number born, number born alive, number stillborn, total litter weight at birth (LWB), and mean litter weight at birth) and those at weaning (litter size at weaning (LSW), total litter weight at weaning (LWW), mean litter weight at weaning (MWW), and survival rate from farrowing to weaning). We analyzed 65,579 records at farrowing and 6,306 at weaning for Landrace, and 52,557 and 5,360, respectively, for Large White. Single-trait and two-trait repeatability animal models were exploited to estimate heritability and genetic correlation respectively. Heritability estimates of LSW were 0.09 for Landrace and 0.08 for Large White. Genetic correlations of LSW with MWW were –0.43 for Landrace and –0.24 for Large White. Genetic correlations of LSW with LWW and LWB ranged from 0.5 to 0.6. The genetic correlation of MWW with LWW was positive, but that with LWB was negligible. The results indicate that utilizing LWW or LWB could improve LSW efficiently, despite the antagonistic genetic correlation between LSW and MWW.
AB - We estimated genetic parameters in Landrace and Large White pig populations for litter traits at farrowing (total number born, number born alive, number stillborn, total litter weight at birth (LWB), and mean litter weight at birth) and those at weaning (litter size at weaning (LSW), total litter weight at weaning (LWW), mean litter weight at weaning (MWW), and survival rate from farrowing to weaning). We analyzed 65,579 records at farrowing and 6,306 at weaning for Landrace, and 52,557 and 5,360, respectively, for Large White. Single-trait and two-trait repeatability animal models were exploited to estimate heritability and genetic correlation respectively. Heritability estimates of LSW were 0.09 for Landrace and 0.08 for Large White. Genetic correlations of LSW with MWW were –0.43 for Landrace and –0.24 for Large White. Genetic correlations of LSW with LWW and LWB ranged from 0.5 to 0.6. The genetic correlation of MWW with LWW was positive, but that with LWB was negligible. The results indicate that utilizing LWW or LWB could improve LSW efficiently, despite the antagonistic genetic correlation between LSW and MWW.
KW - genetic correlation
KW - heritability
KW - litter size at weaning
KW - mean litter weight at weaning
KW - repeatability animal model
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U2 - 10.1111/asj.13304
DO - 10.1111/asj.13304
M3 - Article
C2 - 31625251
AN - SCOPUS:85074345888
SN - 1344-3941
VL - 90
SP - 1510
EP - 1516
JO - Animal Science Journal
JF - Animal Science Journal
IS - 12
ER -